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A Very Large Glitch in PSR B2334+61
J. P. Yuan1,2; R. N. Manchester3; N.Wang1; X.Zhou1; Z.Y.Liu1; Z. F. Gao1,2
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Seven year pulse time-of-arrival measurements have been collected from observations of the young pulsar PSR B2334+61 using the Nanshan radio telescope of Urumqi Observatory. A phase-connected solution has been obtained over the whole data span, 2002 August to 2009 August. This includes a very large glitch that occurred between 2005 August 26 and September 8 (MJDs 53608 and 53621). The relative increase in rotational frequency for this glitch, Delta v(g)/v similar to 20.5x10(-6), is the largest ever seen. Although accounting for less than 1% of the glitch, there were two well-defined exponential decay terms with time constants of 21 and 147 days, respectively. There was also a large long-term increase in the spin-down rate with Delta(v) over dot(p)/(v) over dot similar to 0.011 at the time of the glitch. A highly significant oscillation with a period of close to one year is seen in the post-glitch residuals. It is very unlikely that this can be accounted for by a pulsar position error or proper motion-it appears to result from effects interior to the neutron star. Implications of these results for pulsar glitch models are discussed.

KeywordPulsars Psr b2334+61 Neutron Stars
Subject Area致密天体、高能和基础物理
Indexed BySCI
Funding Project脉冲星研究团组
WOS IDWOS:000281199900001
Funding Organization国家自然科学基金
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Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorN.Wang
Affiliation1.Urumqi Observatory, NAOC, 40-5 South Beijing Road, Urumqi, Xinjiang 830011, China
2.Graduate University of CAS, 19A Yuquan Road, Beijing 100049, China
3.CSIRO Astronomy and Space Science, Australia Telescope National Facility, P.O. Box 76, Epping, NSW 1710, Australia
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
J. P. Yuan,R. N. Manchester,N.Wang,et al. A Very Large Glitch in PSR B2334+61[J]. ASTROPHYSICAL JOURNAL LETTERS ,2010,719(2):111-115.
APA J. P. Yuan,R. N. Manchester,N.Wang,X.Zhou,Z.Y.Liu,&Z. F. Gao.(2010).A Very Large Glitch in PSR B2334+61.ASTROPHYSICAL JOURNAL LETTERS ,719(2),111-115.
MLA J. P. Yuan,et al."A Very Large Glitch in PSR B2334+61".ASTROPHYSICAL JOURNAL LETTERS  719.2(2010):111-115.
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